I have a NF NXS 5.5-22x56 NPR1. My buddy got a Vortex Viper PST 5-20x50 MOA. I think I got the specs right anyway. He got the scope for less than 700. For the money this scope is awesome. There are a few features I like about the NF better; better eye relief, HS turrents, and NPR1 reticle. However, the Viper has just as good of glass and functions on par with my NF. I was looking at getting second scope that I can mount on the 204 and 3006 for more LR rifle fun, and I think this is the route I want to go. Has anyone experienced problems with the Viper line of Vortex LR scopes?